Theoretical study and simulation analysis of distributed vibration de-icing technology for medium voltage overhead lines

In order to solve the traditional artificial de-icing unsafe and inefficient problems, this paper in-depth study of the resonance principle based on the overhead line de-icing technology, based on which a medium voltage power overhead line de-icing system is designed, through the vibration motor to the overhead transmission line output driving force, so as to determine the vibration frequency of the medium voltage power transmission line. Subsequently, the frequency of the vibration motor itself is adjusted, so that the vibration motor and the overhead transmission line are kept in the same frequency that can produce resonance conditions, and the resonance principle is utilized to remove the remaining ice cover on the overhead transmission line. Finite element simulation analysis results found that the transmission line de-icing situation under the action of continuous impact loading mode under different number of gears is more effective than the de-icing situation of transmission line under the action of single impact loading mode, when the number of gears is 4, the de-icing rate of transmission line under the action of continuous impact loading is about 1.6 times of the de-icing rate under the action of single impact loading mode. And the lowest de-icing rate during continuous impact loading is also much higher than the manual de-icing rate, which verifies the feasibility of using the resonance principle to de-ice MV overhead lines.